From 0c622af8470ada80a4c5b03c0a3a4d2317e7ac24 Mon Sep 17 00:00:00 2001
From: Ben Barham <ben_barham@apple.com>
Date: Fri, 27 May 2022 16:52:25 -0700
Subject: [PATCH] Temporarily disable unused-but-set-variable until it's fixed
 in Clang

`_dispatch_preemption_yield(++spins)` expands to `(void)++spins;` on
various platforms. A recent Clang change updated the
`unused-but-set-variable` warning to skip counting operators as a use,
but it ignores `(void)`. Disable the error until that's fixed.
---
 src/CMakeLists.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index adc989d42..c5412ce59 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,7 @@
 
+# Remove once underlying clang warning is fixed (rdar://93596069)
+set_source_files_properties(shims/yield.c PROPERTIES COMPILE_FLAGS -Wno-error=unused-but-set-variable)
+
 if(NOT CMAKE_SYSTEM_NAME STREQUAL Darwin)
   add_subdirectory(BlocksRuntime)
 endif()